/*
 *  Licensed to the Apache Software Foundation (ASF) under one or more
 *  contributor license agreements.  See the NOTICE file distributed with
 *  this work for additional information regarding copyright ownership.
 *  The ASF licenses this file to You under the Apache License, Version 2.0
 *  (the "License"); you may not use this file except in compliance with
 *  the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */
package org.diting.collections;


/**
 * Provides a interface for extract value from specified object.
 * @author Bin Zhang
 *
 * @param <T> The type used to select
 * @param <TResult> The type of extraction result
 */

public interface Selector<T,TResult> {
	/**
	 * get selection result from specified object
	 * @param item  The object used to extract value
	 * @return The selection result. 
	 */
    public TResult select(T item);
}
